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参数资料
| 型号： | DS18S20Z+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/23页 |
| 文件大小： | 0K |
| 描述： | IC THERM MICROLAN HI-PREC 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 感应温度： | -55°C ~ 125°C |
| 输出类型： | 数字 |
| 电源电压： | 3 V ~ 5.5 V |
| 精确度： | ±0.5°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
DS18S20
Figure 4. Supplying the Parasite-Powered DS18S20 During Temperature Conversions
V PU
DS18S20
μ P
V PU
GND DQ V DD
4.7k
1-Wire BUS
TO OTHER
1-WIRE DEVICES
Figure 5. Powering the DS18S20 with an External Supply
μ P
V PU
4.7k
1-Wire BUS
DS18S20
GND DQ V DD
V DD (EXTERNAL SUPPLY)
TO OTHER
1-WIRE DEVICES
64-BIT LASERED ROM CODE
Each DS18S20 contains a unique 64-bit code (see Figure 6) stored in ROM. The least significant 8 bits of
the ROM code contain the DS18S20’s 1-Wire family code: 10h. The next 48 bits contain a unique serial
number. The most significant 8 bits contain a cyclic redundancy check (CRC) byte that is calculated from
the first 56 bits of the ROM code. A detailed explanation of the CRC bits is provided in the CRC
Generation section. The 64-bit ROM code and associated ROM function control logic allow the
DS18S20 to operate as a 1-Wire device using the protocol detailed in the 1-Wire Bus System section.
Figure 6. 64-Bit Lasered ROM Code
8-BIT CRC
48-BIT SERIAL NUMBER
8-BIT FAMILY CODE (10h)
MSB
LSB
MSB
LSB
MSB
LSB
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